EP 0472368 A2 19920226 - Ablation catheter.
Title (en)
Ablation catheter.
Title (de)
Katheter zur Ablation.
Title (fr)
Cathéter d'ablation.
Publication
Application
Priority
US 57038490 A 19900821
Abstract (en)
An ablation catheter is provided with an elongated member or shaft (110) and a plurality of helically-shaped cutting wires (104) atached to the shaft to form a cutting basket (150). Each of the cutting wires has a section formed as a circumferentially subscribing arc (105) and together the wires present a circumferential cutting area of an essentially cylindrical configuration. Each of the wires (104) comprises a first curved or straight section (123) extending from the distal end of shaft (110) to a discontinuity such as a corner or kink (125). Obstructing matter on the inner surface of a vessel cavity, such as a blood vessel or the like, is separated from the surface as the catheter is moved through the vessel. The catheter may be inserted in a vessel in a standard fashion using a wire guide (102) which extends through a longitudinal passageway in the shaft and a hub (103) interconnecting the basket wire. The shaft and basket together may be contained in an outer sheath to facilitate insertion. The outer sheath with the basket in a collapsed state in the outer sheath may be readily moved past an obstruction, and the sheath withdrawn to allow the basket to expand and come in contact with the interior surface of the vessel cavity. The proximal ends of the cutting wires extend from the shaft through a vibratory transducer, and the distal ends are connected together by a hub. Electrical current is applied to electrical terminals connected to the cutting wires at the proximal end of the shaft to heat the wires to facilitate separating obstructing matter from a vessel surface. Futhermore, the vibration transducer vibrates the cutting wires to further aid in separating plaque and obstructions from soft tissue such as the intima layer of the wall of a blood vessel.
IPC 1-7
IPC 8 full level
A61B 17/00 (2006.01); A61B 17/22 (2006.01); A61B 18/08 (2006.01); A61M 25/00 (2006.01); A61B 17/32 (2006.01); A61F 2/01 (2006.01)
CPC (source: EP US)
A61B 17/2202 (2013.01 - EP US); A61B 17/221 (2013.01 - EP US); A61B 18/10 (2013.01 - EP US); A61B 2017/22021 (2013.01 - EP US); A61B 2017/22038 (2013.01 - EP US); A61B 2017/2212 (2013.01 - EP US); A61B 2018/00077 (2013.01 - EP US); A61B 2018/00148 (2013.01 - EP US); A61B 2018/00642 (2013.01 - EP US); A61F 2/013 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0472368 A2 19920226; EP 0472368 A3 19920311; EP 0472368 B1 19950628; AT E124231 T1 19950715; AU 643552 B2 19931118; AU 8267591 A 19920227; CA 2049146 A1 19920222; CA 2049146 C 20010911; DE 69110794 D1 19950803; DE 69110794 T2 19951207; ES 2073687 T3 19950816; JP 3151010 B2 20010403; JP H05137729 A 19930601; US 5100423 A 19920331
DOCDB simple family (application)
EP 91307551 A 19910815; AT 91307551 T 19910815; AU 8267591 A 19910821; CA 2049146 A 19910813; DE 69110794 T 19910815; ES 91307551 T 19910815; JP 23254491 A 19910821; US 57038490 A 19900821